Rabble-blade



' w. H. SAYRE'. RABBLE BLADE.

APPLICATION FILED JULY 27,1918- 1,340,916. 5 Q Patented y 25,1920.

HEETS-SHEET I- /V. WNW/vial? M ATTORNEY w. H. SAYR E.

RABBLE BLADE.

, APPLICATION FILED JULY 27, 1918.

E88 ,di7 uwmvrofi ATTORNEY Patented May 2 920.

2 SHEETS-S 2.

UNITED sTATes PATENT OFFICE.

WILLIAM H. SAYRE, 0F GLEN RIDGE,

RABBLE-BLADE.

Specification of Letters Patent.

Patented May 25, 19,20.

Application filed July 27, 1918. .Serial No. 246,982.

To all whom it may concern:

Be it known that I, \VILLIAM H. SAYRE, a citizen of the United States, residing at Glen Ridge, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Rabble-Blades, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to wear resistant materials, and it is particularly applicable treated in the furnace. Owing to the nature of the said material and process, the rabble blades are very short-lived, theirbodies, and particularly their sides, being quickly worn away by the abrading contact of the pieces of the material being treated. As a result of this wearing away of the rabble blades, the said material accumulates, and it is necessary to bar or separate the pieces thereof, during which process poisonous gases may be given off.

lVith these defects in vicw,objects of the invention are to" provide a rabble blade which shall be highly wear-resistant and which will be efficient and economical in construction and operatlon. These and other objects of the invention will in part be obvious and in part be more fully explained in the following description.

In the accompanying drawings, which are referred to herein and form part hereof, are

illustrated several embodiments of the invention,the same serving inconnection with the description herein to explain the principles of the invention and to set forth its advantages.

0f the drawings:

Figure 1 is a side view of a rabble blade constructed in'accordance with certain features of the invention;

treated.

Fig. 2 is a similar view showing a clifferent arrangement of the hard mineral elem-ents by means of which the blade is made w ear-resist ant F ig. 3 is an end or edge view, partly in section of a rabble blade made in accordance with one feature of the invention;

Fig. 4 is a side view, partly in section,, of a rabble blade made in accordance with one feature of the invention and showing the hard mineral elements in the side portion of the blade arranged in horizontal rows; and

Fig. 5 is a view similar to Figs. 1 and 2, but showing the said mineral elements ,arranged in intersecting diagonal rows.

A rabble blade constructed in accordance with the invention comprises a body portion, and wear-resistant elements disposed in the side thereof so as to protect the said side face from wear, whileat the .same time not unduly weakening the said body.

In the preferred embodiment of the invention, the said wear-resistant elements are composed of hardmineral, as alundum, and are disposed in spaced-apart horizontal rows.

Referring in detail to thedrawings, there is illustrated in Fig. 2 an embodiment of the invention comprising a body 7 of .a rabrabble blade is secured at its upper portion 8 to a revolving arm of the machine by which it ismoved through the material being A common formof rabble blade is made of metal, cast iron, and it will readily be seen that because of the nature of the materials being treated and'of the process of treating the same, the wearon the rabble blade is very severe and the life of the blade consequently is very short.

To render the blade more wear-resistant andthus prolong its life, while at the same time avoiding the other consequent defects Preferably, these elements are composed of hard mineral substances, such as artificial corundum, known as alundum, andare made of suitable: proportions. "It will be" noted that these elements may be disposed throughout the body of the blade during the casting process, the material composing the elements being of such nature as not to be injuriously affected by the heat of the molten metal. Preferably, also, the elements will be of such size as to extend through the body of the blade and project on both sides.

It isdesirable,however, not to weaken the structure of the blade, and therefore in the best embodiment of the invention, the elements are disposed in the side faces of the Several 6X- blade suitably spaced apart. amples of this spacing apart of the elements are shown in the drawings; In Fig.

2, for example, the elements are disposed irregular1y,'but yet in a manner to protect the sides of the:blade from wear. In the preferredembodiment illustrated in Fig. A the elements are disposed in horizontal rows at spaced intervals, and in Figs.- l and 5 other formations are illustrated. P

It will be seen that a rabble blade constructed in accordance with the invention 7 as heretofore described will carry out the acted on, such for'instance as paddle blades or mixing blades for use in pug .mills, or other forms of mixing' or agitating blades for acting on other materials.

The invention in its broader aspects is not limited to the precise construction or constructions shown and described, as many changes may be made in the details thereof Without departing from the main principles of the invention or sacrificing its chief ad vantages.

I claim? 1. A member for agitating or stirring material, said member having a body portion adapted to be moved through the material and agitate or stir the same, said body portion having wear-resistant elements disposed in the side face thereof, to protect the same from wear by the abrasion of the material thereon. V r

- 2. A rabble blade adapted to be moved through material to agitate the same, and having wear-resistant elements disposed-in theside face thereof to prevent the blade from wear by the abrasion of the material thereon.

3. A member for agitating or stirring material, said member havinga metal blade portion adapted to be moved through the .material and agitate or stir the same, said blade portion having hard wear-resistant elements disposed in the side face thereof toprotect the blade from wear by the abrasion of the material thereon.

4. A member for agitating or stirring material, said member having a metal blade portion adapted tobe moved through the material and agitate or stir the same, said blade portion having alundum wear-resistant elements disposed in the'side face thereof to protect the metal fromwear by' th abrasion of the material thereon. l

' 5. member for agitating or-stirring material, said member having a bladefportion adapted tobe moved through the material and agitate or stir the samegsaid blade portion having hard wear-resistant elements disposed in spaced apartgroups in the side face thereof to protect theblade from wear by the abrasion of the 'material thereon. p

6. A member for agitating or stirring material, said member having a blade portion adapted to be moved through the material and agitate or stir the same, said blade portion having hard wear-resistant elements disposed in-spaced apart rows in the side face thereof to protect the blade from wear by the abrasion of the material thereon; V

7. A" member for agitating or stirring material, said member having a blade portion adapted to be moved through the ma- ,terial and agitate or stir the same, said blade port1on having hardxwear-resistant elements dlsposed in spaced apart horizontal rows in the side face thereof to protect the blade from wear by the abrasion of the materialthereon.

V 8. A member for agitating or stirring material, said member having a body portion adapted to be moved through the material and agitate or stir the same, said body portion having wear-resistant elements disposed in bothside faces thereof to protect the same from wear by the abrasion of the material thereon.

9. A rabble blade adapted tobe moved throughmaterial to agitate the same, said blade having wear-resistant elements disposed in'both side faces thereof toprotect the said faces from wear bythe abrasion of the material thereon.

10. A member for agitatingor' stirring M materiahsaid member having a blade portion adaptedto be moved through the material and agitate or stir the same, said blade portion having wear resistant elements disposed at intervals in the side face said blade having hard Wear-resistant elethereof to protect the same from Wear by ments disposed in the side face thereof to the abrasion of the material thereon. protect the metal from wear by the abrasion 10 11. A member for agitating or stirring of the material thereon. 5 material said member having a flat metal In testimony whereof I have aflixed my blade adapted to be moved facewise through signature hereto. the material and agitate or stir the same, WILLIAM H. SAYRE. 

